I was having trouble with my computer.
So I called Rick, the computer guy, to come over.
Rick clicked a couple of buttons, solved the problem and gave me a bill for a minimum service call.
As he was walking away, I called after him, "So, what was wrong?"
He replied, "It was an ID ten T error." I didn't want to appear stupid, but nonetheless inquired:
"An ID ten T error? What's that ... in case I need to fix it again?"
The computer guy grinned.... "Haven't you ever heard of an ID ten T error before?"
"No," I replied. "Write it down," he said, "and I think you'll figure it out."
So I wrote out .... I D 1 0 T 